// Tencent is pleased to support the open source community by making RapidJSON available.
// 
// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
//
// Licensed under the MIT License (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
//
// http://opensource.org/licenses/MIT
//
// Unless required by applicable law or agreed to in writing, software distributed 
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 
// CONDITIONS OF ANY KIND, either express or implied. See the License for the 
// specific language governing permissions and limitations under the License.

#ifndef RAPIDJSON_OSTREAMWRAPPER_H_
#define RAPIDJSON_OSTREAMWRAPPER_H_

#include "stream.h"
#include <iosfwd>

#ifdef __clang__
RAPIDJSON_DIAG_PUSH
RAPIDJSON_DIAG_OFF(padded)
#endif

RAPIDJSON_NAMESPACE_BEGIN

//! Wrapper of \c std::basic_ostream into RapidJSON's Stream concept.
/*!
    The classes can be wrapped including but not limited to:

    - \c std::ostringstream
    - \c std::stringstream
    - \c std::wpstringstream
    - \c std::wstringstream
    - \c std::ifstream
    - \c std::fstream
    - \c std::wofstream
    - \c std::wfstream

    \tparam StreamType Class derived from \c std::basic_ostream.
*/

    template<typename StreamType>
    class BasicOStreamWrapper {
    public:
        typedef typename StreamType::char_type Ch;

        BasicOStreamWrapper(StreamType &stream) : stream_(stream) {}

        void Put(Ch c) {
            stream_.put(c);
        }

        void Flush() {
            stream_.flush();
        }

        // Not implemented
        char Peek() const {
            RAPIDJSON_ASSERT(false);
            return 0;
        }

        char Take() {
            RAPIDJSON_ASSERT(false);
            return 0;
        }

        size_t Tell() const {
            RAPIDJSON_ASSERT(false);
            return 0;
        }

        char *PutBegin() {
            RAPIDJSON_ASSERT(false);
            return 0;
        }

        size_t PutEnd(char *) {
            RAPIDJSON_ASSERT(false);
            return 0;
        }

    private:
        BasicOStreamWrapper(const BasicOStreamWrapper &);

        BasicOStreamWrapper &operator=(const BasicOStreamWrapper &);

        StreamType &stream_;
    };

    typedef BasicOStreamWrapper<std::ostream> OStreamWrapper;
    typedef BasicOStreamWrapper<std::wostream> WOStreamWrapper;

#ifdef __clang__
    RAPIDJSON_DIAG_POP
#endif

RAPIDJSON_NAMESPACE_END

#endif // RAPIDJSON_OSTREAMWRAPPER_H_
